en_tn_condensed/isa/11/10.md

the root of Jesse

This refers to Jesse's and King David's descendant who would become the king that was told about in Isaiah 1:1. Alternate translation: "Jesse's descendant king" or "the king descended from Jesse" (See: rc://en/ta/man/translate/figs-metonymy)

will stand as a banner for the peoples

A banner is a flag that a king would raise as a sign for people to see it and come to him. Alternate translation: "will be like a sign for the peoples" or "will attract the peoples to come to him" (See: rc://en/ta/man/translate/figs-simile)

The nations

"The people of the nations"